(Objective-C) Example: Http.HttpSb method

Shows how to use the HttpSb method to send an HTTP POST request with a StringBuilder as the request body. The example sends the following request:

POST /echo_request_body.asp HTTP/1.1
Host: chilkatsoft.com
Accept: */*
Accept-Encoding: gzip
Content-Type: application/json
Content-Length: 26

{"greeting":"Hello World"}

Also see: Chilkat Http Default and Auto-Filled Headers

Note: This example requires Chilkat v11.0.0 or greater.

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#import <CkoHttp.h>
#import <CkoStringBuilder.h>
#import <NSString.h>
#import <CkoHttpResponse.h>

BOOL success = NO;

CkoHttp *http = [[CkoHttp alloc] init];
success = NO;

CkoStringBuilder *sb = [[CkoStringBuilder alloc] init];
[sb Append: @"{\"greeting\":\"Hello World\"}"];

// This URL echoes the contents of the request body, letting us view it.
NSString *url = @"https://chilkatsoft.com/echo_request_body.asp";

// Send a POST with the contents of the StringBuilder in the HTTP request body.
CkoHttpResponse *resp = [[CkoHttpResponse alloc] init];
success = [http HttpSb: @"POST" url: url sb: sb charset: @"utf-8" contentType: @"application/json" response: resp];
if (success == NO) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

NSLog(@"%@%d",@"Response Status Code: ",[resp.StatusCode intValue]);

// Examine the request we sent.
// The LastHeader property stores the HTTP request header of the most recent request sent,
// and in this instance, the response body mirrors the request body.
NSLog(@"%@",http.LastHeader);
NSLog(@"%@",resp.BodyStr);

// Output:

// POST /echo_request_body.asp HTTP/1.1
// Host: chilkatsoft.com
// Accept: */*
// Accept-Encoding: gzip
// Content-Type: application/json
// Content-Length: 26
// 
// {"greeting":"Hello World"}